ATMEGA328P-AU Atmel, ATMEGA328P-AU Datasheet - Page 21

MCU AVR 32K FLASH 32TQFP

ATMEGA328P-AU

Manufacturer Part Number
ATMEGA328P-AU
Description
MCU AVR 32K FLASH 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar

Specifications of ATMEGA328P-AU

Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP, 32-VQFP
Processor Series
ATMEGA32x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
2-Wire, SPI, USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
23
Number Of Timers
3
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Cpu Family
ATmega
Device Core
AVR
Device Core Size
8b
Frequency (max)
20MHz
Total Internal Ram Size
2KB
# I/os (max)
23
Number Of Timers - General Purpose
3
Operating Supply Voltage (typ)
2.5/3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
1.8V
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
32
Package Type
TQFP
Controller Family/series
AVR MEGA
No. Of I/o's
23
Eeprom Memory Size
1KB
Ram Memory Size
2KB
Cpu Speed
20MHz
Rohs Compliant
Yes
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVR
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ATMEGA328P-20AU
ATMEGA328P-20AU
Q3790246

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA328P-AU
Manufacturer:
KINGBRIGHT
Quantity:
37 000
Part Number:
ATMEGA328P-AU
Manufacturer:
ATMEL
Quantity:
1 250
Part Number:
ATMEGA328P-AU
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATMEGA328P-AU
Manufacturer:
AT
Quantity:
1 000
Part Number:
ATMEGA328P-AU
Manufacturer:
AT
Quantity:
400
Company:
Part Number:
ATMEGA328P-AU
Manufacturer:
ATMEL
Quantity:
35 000
Company:
Part Number:
ATMEGA328P-AU
Manufacturer:
ATMEL
Quantity:
99 800
Part Number:
ATMEGA328P-AU
Manufacturer:
ATMEL
Quantity:
1 011
Company:
Part Number:
ATMEGA328P-AU - MCU
Manufacturer:
ATMEL
Quantity:
4 800
Part Number:
ATMEGA328P-AUR
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATMEGA328P-AUR
Manufacturer:
ATMEL
Quantity:
1 000
7.5.1
7.6
7.6.1
7.6.2
7.6.3
8271C–AVR–08/10
Register Description
General Purpose I/O Registers
EEARH and EEARL – The EEPROM Address Register
EEDR – The EEPROM Data Register
EECR – The EEPROM Control Register
The ATmega48A/48PA/88A/88PA/168A/168PA/328/328P contains three General Purpose I/O
Registers. These registers can be used for storing any information, and they are particularly use-
ful for storing global variables and Status Flags. General Purpose I/O Registers within the
address range 0x00 - 0x1F are directly bit-accessible using the SBI, CBI, SBIS, and SBIC
instructions.
• Bits 15:9] – Reserved
These bits are reserved bits in the ATmega48A/48PA/88A/88PA/168A/168PA/328/328P and will
always read as zero.
• Bits 8:0 – EEAR[8:0]: EEPROM Address
The EEPROM Address Registers – EEARH and EEARL specify the EEPROM address in the
256/512/512/1K bytes EEPROM space. The EEPROM data bytes are addressed linearly
between 0 and 255/511/511/1023. The initial value of EEAR is undefined. A proper value must
be written before the EEPROM may be accessed.
EEAR8 is an unused bit in ATmega 48A/48PA and must always be written to zero.
• Bits 7:0 – EEDR[7:0]: EEPROM Data
For the EEPROM write operation, the EEDR Register contains the data to be written to the
EEPROM in the address given by the EEAR Register. For the EEPROM read operation, the
EEDR contains the data read out from the EEPROM at the address given by EEAR.
• Bits 7:6 – Reserved
These bits are reserved bits in the ATmega48A/48PA/88A/88PA/168A/168PA/328/328P and will
always read as zero.
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
Bit
0x22 (0x42)
0x21 (0x41)
Read/Write
Initial Value
Bit
0x20 (0x40)
Read/Write
Initial Value
Bit
0x1F (0x3F)
Read/Write
Initial Value
EEAR7
MSB
R/W
R/W
15
R
R
7
0
X
7
0
7
0
EEAR6
R/W
R/W
14
R
R
6
0
X
6
0
6
0
EEPM1
EEAR5
R/W
R/W
R/W
13
R
5
X
5
0
X
5
0
EEPM0
EEAR4
R/W
R/W
R/W
12
X
R
4
4
0
X
4
0
EEAR3
EERIE
R/W
R/W
R/W
11
R
3
0
3
0
X
3
0
EEMPE
EEAR2
R/W
R/W
R/W
10
R
2
0
X
2
0
2
0
EEAR1
EEPE
R/W
R/W
R/W
R
9
1
0
X
1
0
X
1
EEAR8
EEAR0
EERE
R/W
R/W
LSB
R/W
R/W
X
X
8
0
0
0
0
0
EEARH
EEARL
EEDR
EECR
21

Related parts for ATMEGA328P-AU